To　investigate　the　seismic　performance　of　reinforced　concrete　columns　with　strong　confinement,　quasi-static　tests　on　six　full-scale　reinforced　concrete　columns　with　stirrup　characteristic　values　in　the　range　of　0.34~0.44　and　with　section　dimension　450mm×450mm　were　conducted.　The　test　results　indicated　that　the　failure　modes　of　specimens　were　compression-bending;　the　longitudinal　bars　buckled　in　compression　and　even　broke;　several　stirrups　fractured.　Within　a　height　of　one　time　of　column　depth　above　the　column　bottom　the　concrete　cover　spalled　seriously　and　the　confined　concrete　partially　crushed.　The　lateral　force-displacement　hysteretic　loops　were　plump,　the　ultimate　drift　ratios　ranged　from　1/39　to　1/33　and　the　ductility　coefficients　were　greater　than　3.　Changing　the　stirrup　types　or　changing　the　space　of　stirrup　legs　had　little　effects　on　the　load-carrying　capacity　and　ultimate　deformation　capacity　of　specimens.　Increasing　the　number　of　lateral　loading　cycle　from　3　to　5　had　little　effects　on　the　load-carrying　capacity　and　peak　deformation　of　specimens,　but　led　to　about　15%　decrease　of　the　deformation　capacity.